Added more docs.

README.md

@@ -63,3 +63,26 @@ To build the plugin, just type the following command:
 ```bash
 ./gradlew clean build
 ```
+
+
+## Contributing
+
+Contributions are always welcome! If you'd like to contribute (and we hope you do) please send 
+one of the existing contributors a nudge.
+
+
+## License
+
+```
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+   http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+```